JP7364508B2 - Wireless communication device, vehicle equipped with the same, and wireless communication system - Google Patents

Wireless communication device, vehicle equipped with the same, and wireless communication system Download PDF

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JP7364508B2
JP7364508B2 JP2020051348A JP2020051348A JP7364508B2 JP 7364508 B2 JP7364508 B2 JP 7364508B2 JP 2020051348 A JP2020051348 A JP 2020051348A JP 2020051348 A JP2020051348 A JP 2020051348A JP 7364508 B2 JP7364508 B2 JP 7364508B2
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communication
communication device
polling
nfc
ble
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JP2021147957A (en
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洋介 大橋
啓太 祖父江
信吾 望月
紀博 清水
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Tokai Rika Co Ltd
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Tokai Rika Co Ltd
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Priority to JP2020051348A priority Critical patent/JP7364508B2/en
Priority to PCT/JP2020/046486 priority patent/WO2021192446A1/en
Priority to CN202080093232.XA priority patent/CN114981513A/en
Priority to DE112020006952.4T priority patent/DE112020006952T5/en
Priority to US17/912,701 priority patent/US20230164551A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H04B5/48—Transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mechanical Engineering (AREA)
  • Databases & Information Systems (AREA)
  • Lock And Its Accessories (AREA)
  • Telephone Function (AREA)

Description

本開示は、無線通信装置及びそれを備える車両並びに無線通信システムに関する。 The present disclosure relates to a wireless communication device, a vehicle equipped with the same, and a wireless communication system.

スマートフォン等の携帯機器を用いて車両や住宅等のドアの解錠及び施錠等を行なう技術が知られている。たとえば、特開２０１３－１００６４５号公報（特許文献１）には、双方向に通信可能な携帯機器及び車載通信機を備える無線通信システムを開示する。この無線通信システムでは、近距離無線通信（たとえば、ＮＦＣ（Near Field Communication）の規格に従う通信方式を用いる無線通信であり、以下「ＮＦＣ通信」或いは単に「ＮＦＣ」等と称する。）等を用いて、携帯機器と車載通信機との間で無線通信が行なわれ、携帯機器から車両ドアの解錠及び施錠又はエンジンの始動を行なうことができる（特許文献１参照）。 2. Description of the Related Art Techniques for unlocking and locking doors of vehicles, houses, etc. using mobile devices such as smartphones are known. For example, Japanese Unexamined Patent Application Publication No. 2013-100645 (Patent Document 1) discloses a wireless communication system including a portable device and a vehicle-mounted communication device capable of bidirectional communication. This wireless communication system uses short-range wireless communication (for example, wireless communication that uses a communication method that complies with the NFC (Near Field Communication) standard, hereinafter referred to as "NFC communication" or simply "NFC", etc.). , wireless communication is performed between the mobile device and the vehicle-mounted communication device, and it is possible to unlock and lock the vehicle door or start the engine from the mobile device (see Patent Document 1).

特開２０１３－１００６４５号公報Japanese Patent Application Publication No. 2013-100645

上記のような無線通信システムでは、携帯機器を所持する利用者が車両等に近づいたことを検知するために、車両等に設けられる通信機において、携帯機器を検知するためのポーリングが行なわれる。このポーリングに伴なう暗電流が大きいと、通信機へ作動電力を供給するバッテリが意図せず枯渇する等の問題が生じる可能性がある。 In the above wireless communication system, in order to detect when a user carrying a mobile device approaches a vehicle, a communication device installed in a vehicle or the like performs polling to detect the mobile device. If the dark current accompanying this polling is large, problems such as unintentional depletion of the battery that supplies operating power to the communication device may occur.

本開示は、かかる問題を解決するためになされたものであり、本開示の目的は、携帯機器と無線通信を行なう通信機を備える無線通信装置及びそれを備える車両並びに無線通信システムにおいて、暗電流を低減することである。 The present disclosure has been made to solve such problems, and an object of the present disclosure is to reduce dark current in a wireless communication device equipped with a communication device that performs wireless communication with a mobile device, a vehicle equipped with the same, and a wireless communication system The aim is to reduce

本開示の無線通信装置は、互いに異なる通信方式を用いて無線通信を行なう複数の通信機と、複数の通信機を制御するコントローラとを備える。複数の通信機の各々は、無線通信可能な携帯機器を検知するためのポーリングと、ポーリングにより検知された携帯機器の認証とを行なうように構成される。コントローラは、複数の通信機のうちのいずれかにおいて認証が完了した場合に、残余の通信機によるポーリングを停止する。 A wireless communication device of the present disclosure includes a plurality of communication devices that perform wireless communication using mutually different communication methods, and a controller that controls the plurality of communication devices. Each of the plurality of communication devices is configured to perform polling to detect a mobile device capable of wireless communication and authenticate the mobile device detected by polling. When authentication is completed in any one of the plurality of communication devices, the controller stops polling by the remaining communication devices.

また、本開示の無線通信システムは、無線通信装置と、無線通信装置と無線通信を行なう携帯機器とを備える。無線通信装置は、互いに異なる通信方式を用いて無線通信を行なう複数の通信機と、複数の通信機を制御するコントローラとを含む。複数の通信機の各々は、携帯機器を検知するためのポーリングと、ポーリングにより検知された携帯機器の認証とを行なうように構成される。コントローラは、複数の通信機のうちのいずれかにおいて認証が完了した場合に、残余の通信機によるポーリングを停止する。 Further, the wireless communication system of the present disclosure includes a wireless communication device and a mobile device that performs wireless communication with the wireless communication device. A wireless communication device includes a plurality of communication devices that perform wireless communication using different communication methods, and a controller that controls the plurality of communication devices. Each of the plurality of communication devices is configured to perform polling to detect a mobile device and authenticate the mobile device detected by polling. When authentication is completed in any one of the plurality of communication devices, the controller stops polling by the remaining communication devices.

上記の無線通信装置は、複数の通信機を備えており、複数の通信機のうちのいずれかにおいて携帯機器の認証が完了した場合には、残余の通信機と当該携帯機器との通信は不要になるため、残余の通信機によるポーリングを停止させる。これにより、ポーリングに伴なう暗電流を低減することができる。 The above wireless communication device is equipped with multiple communication devices, and if authentication of the mobile device is completed in one of the multiple communication devices, communication between the remaining communication devices and the mobile device is unnecessary. Therefore, polling by the remaining communication devices is stopped. Thereby, dark current associated with polling can be reduced.

本開示の無線通信装置及びそれを備える車両並びに無線通信システムによれば、暗電流を低減することができる。 According to the wireless communication device of the present disclosure, a vehicle including the same, and a wireless communication system, dark current can be reduced.

本開示の実施の形態に従う無線通信システムの全体ブロック図である。1 is an overall block diagram of a wireless communication system according to an embodiment of the present disclosure. 車両のＢＬＥ通信機及びＮＦＣ通信機によるポーリングの一例を示すタイミングチャートである。It is a timing chart showing an example of polling by a BLE communication device and an NFC communication device of a vehicle. 車両のＮＦＣ通信機及びＢＬＥ通信機によるポーリングの他例を示すタイミングチャートである。It is a timing chart showing another example of polling by an NFC communication device and a BLE communication device of a vehicle. 車両の無線コントローラにより実行される処理の手順の一例を示すフローチャートである。3 is a flowchart illustrating an example of a procedure of processing executed by a wireless controller of a vehicle.

以下、本開示の実施の形態について、図面を参照しながら詳細に説明する。なお、図中同一又は相当部分には同一符号を付してその説明は繰り返さない。 Embodiments of the present disclosure will be described in detail below with reference to the drawings. In addition, the same reference numerals are attached to the same or corresponding parts in the drawings, and the description thereof will not be repeated.

図１は、本開示の実施の形態に従う無線通信システムの全体ブロック図である。図１を参照して、無線通信システムは、車両１０と、携帯機器５０とを備える。車両１０は、ＮＦＣ通信機１２と、ＢＬＥ（Bluetooth Low Energy、「Bluetooth」は登録商標）通信機１４と、無線コントローラ１６とを含む。ＮＦＣ通信機１２、ＢＬＥ通信機１４、及び無線コントローラ１６は、携帯機器５０と無線通信を行なう無線通信装置を構成する。 FIG. 1 is an overall block diagram of a wireless communication system according to an embodiment of the present disclosure. Referring to FIG. 1, the wireless communication system includes a vehicle 10 and a mobile device 50. Vehicle 10 includes an NFC communication device 12, a BLE (Bluetooth Low Energy, “Bluetooth” is a registered trademark) communication device 14, and a wireless controller 16. The NFC communication device 12, the BLE communication device 14, and the wireless controller 16 constitute a wireless communication device that wirelessly communicates with the mobile device 50.

ＮＦＣ通信機１２は、ＮＦＣ規格に従う通信方式を用いて携帯機器５０と無線通信を行なう通信機である。ＮＦＣ通信機１２は、バッテリ２６から電力の供給を受けて作動し、図示しないアンテナを通じて、携帯機器５０のＮＦＣ通信機５２との間でＮＦＣ通信を行なう。ＮＦＣ通信機１２には、ＮＦＣ通信機能のうち、少なくともリーダライタ機能が実装される。リーダライタ機能に加えて機器間通信（Ｐ２Ｐ）機能が実装されてもよい。 The NFC communication device 12 is a communication device that performs wireless communication with the mobile device 50 using a communication method according to the NFC standard. The NFC communication device 12 operates by receiving power from the battery 26, and performs NFC communication with the NFC communication device 52 of the mobile device 50 through an antenna (not shown). The NFC communication device 12 is equipped with at least a reader/writer function among NFC communication functions. In addition to the reader/writer function, a device-to-device communication (P2P) function may be implemented.

ＮＦＣ通信機１２は、無線コントローラ１６からの指示に従って、携帯機器５０を検知するためのポーリングを実行する。すなわち、ＮＦＣ通信機１２は、ＮＦＣ規格に従って、周囲に対して一定期間毎にリクエスト信号を送信し、リクエスト信号に応答して携帯機器５０のＮＦＣ通信機５２から送信されるレスポンス信号を受信する。ＮＦＣ通信機１２は、レスポンス信号を受信すると、レスポンス信号に含まれる認証データ（ＩＤ情報）を復調して無線コントローラ１６へ出力する。 The NFC communication device 12 executes polling to detect the mobile device 50 according to instructions from the wireless controller 16. That is, the NFC communication device 12 transmits a request signal to the surroundings at regular intervals according to the NFC standard, and receives a response signal transmitted from the NFC communication device 52 of the mobile device 50 in response to the request signal. Upon receiving the response signal, the NFC communication device 12 demodulates the authentication data (ID information) included in the response signal and outputs it to the wireless controller 16.

ＢＬＥ通信機１４は、ＢＬＥ通信規格に従う通信方式を用いて携帯機器５０と無線通信を行なう通信機である。ＢＬＥ通信機１４も、バッテリ２６から電力の供給を受けて作動し、図示しないアンテナを通じて、携帯機器５０のＢＬＥ通信機５４との間でＢＬＥ通信を行なう。ＢＬＥ通信の通信可能範囲は数ｍ以上であり、ＮＦＣ通信の通信可能範囲（１０ｃｍ程度）よりも広い。 The BLE communication device 14 is a communication device that performs wireless communication with the mobile device 50 using a communication method that complies with the BLE communication standard. The BLE communication device 14 also operates upon receiving power from the battery 26, and performs BLE communication with the BLE communication device 54 of the mobile device 50 through an antenna (not shown). The communicable range of BLE communication is several meters or more, which is wider than the communicable range of NFC communication (about 10 cm).

ＢＬＥ通信機１４も、無線コントローラ１６からの指示に従って、携帯機器５０を検知するためのポーリングを実行する。すなわち、ＢＬＥ通信機１４は、ＢＬＥ通信規格に従って、周囲に対して一定期間毎にリクエスト信号を送信し、リクエスト信号に応答して携帯機器５０のＢＬＥ通信機５４から送信されるレスポンス信号を受信する。ＢＬＥ通信機１４は、レスポンス信号を受信すると、レスポンス信号に含まれる認証データ（ＩＤ情報）を復調して無線コントローラ１６へ出力する。 The BLE communication device 14 also performs polling to detect the mobile device 50 according to instructions from the wireless controller 16. That is, the BLE communication device 14 transmits a request signal to the surroundings at regular intervals in accordance with the BLE communication standard, and receives a response signal transmitted from the BLE communication device 54 of the mobile device 50 in response to the request signal. . Upon receiving the response signal, the BLE communication device 14 demodulates the authentication data (ID information) included in the response signal and outputs it to the wireless controller 16.

無線コントローラ１６は、図示しない処理装置と、メモリ１８とを含んで構成され、ＮＦＣ通信機１２及びＢＬＥ通信機１４を制御する。具体的には、無線コントローラ１６は、所定のポーリング条件が成立すると、ＮＦＣ通信機１２及びＢＬＥ通信機１４へポーリングの実行を指示する指令を出力する（ポーリング処理）。 The wireless controller 16 includes a processing device (not shown) and a memory 18, and controls the NFC communication device 12 and the BLE communication device 14. Specifically, when a predetermined polling condition is satisfied, the wireless controller 16 outputs a command to the NFC communication device 12 and the BLE communication device 14 to instruct the execution of polling (polling process).

また、無線コントローラ１６は、ＮＦＣ通信機１２又はＢＬＥ通信機１４により受信され復調されたＩＤ情報を受けると、そのＩＤ情報をメモリ１８に記憶されているＩＤ情報と照合する（認証処理）。そして、照合の結果、ＩＤ情報の一致が確認されると、携帯機器５０の認証が完了する。これにより、認証された携帯機器５０を用いて、ドアロック装置２２の操作（乗降用ドアの解施錠）やエンジン２４の始動等が可能となる。なお、メモリ１８に記憶されているＩＤ情報は、車両制御装置２０のメモリ（図示せず）に記憶されていてもよいし、ＮＦＣ通信機１２及びＢＬＥ通信機１４の各々に記憶されていてもよい。無線コントローラ１６の処理については、後ほどさらに詳しく説明する。 Further, upon receiving the ID information received and demodulated by the NFC communication device 12 or the BLE communication device 14, the wireless controller 16 compares the ID information with the ID information stored in the memory 18 (authentication processing). Then, as a result of the comparison, when it is confirmed that the ID information matches, the authentication of the mobile device 50 is completed. Thereby, using the authenticated portable device 50, it becomes possible to operate the door lock device 22 (unlock the boarding/exiting door), start the engine 24, etc. Note that the ID information stored in the memory 18 may be stored in the memory (not shown) of the vehicle control device 20, or may be stored in each of the NFC communication device 12 and the BLE communication device 14. good. The processing of the wireless controller 16 will be explained in more detail later.

車両１０は、さらに、車両制御装置２０と、ドアロック装置２２と、エンジン２４と、バッテリ２６とを含む。ドアロック装置２２は、車両１０の乗降用ドアを施錠状態（ロック状態）と解錠状態（アンロック状態）とのいずれかに切り替えるように構成される。エンジン２４は、車両１０が走行するための駆動力を発生する内燃機関である。 Vehicle 10 further includes a vehicle control device 20, a door lock device 22, an engine 24, and a battery 26. The door lock device 22 is configured to switch the entry/exit door of the vehicle 10 between a locked state (locked state) and an unlocked state (unlocked state). Engine 24 is an internal combustion engine that generates driving force for vehicle 10 to travel.

車両制御装置２０は、ＣＰＵ（Central Processing Unit）、メモリ、信号入出力ポート等を含んで構成される（いずれも図示せず）。車両制御装置２０は、車両１０の各種制御を行なう。一例として、車両制御装置２０は、乗降用ドアの解錠要求に従ってドアロック装置２２へ解錠指令（アンロック指令）を出力し、乗降用ドアの施錠要求に従ってドアロック装置２２へ施錠指令（ロック指令）を出力する。また、車両制御装置２０は、エンジン２４の始動要求に従ってエンジン２４の始動制御を実行する。 The vehicle control device 20 includes a CPU (Central Processing Unit), a memory, a signal input/output port, and the like (all not shown). The vehicle control device 20 performs various controls on the vehicle 10. As an example, the vehicle control device 20 outputs an unlock command (unlock command) to the door lock device 22 in response to a request to unlock the door for getting on and off, and outputs a lock command (lock command) to the door lock device 22 in response to a request to lock the door for getting on and off. command) is output. Further, the vehicle control device 20 executes starting control of the engine 24 in accordance with a request for starting the engine 24 .

ここで、車両制御装置２０は、携帯機器５０の認証が完了した旨の通知を無線コントローラ１６から受けると、認証された携帯機器５０を用いたドアロック装置２２の操作（ドアの解施錠）及びエンジン２４の始動を許可する。そして、携帯機器５０を用いてドアロック装置２２の操作或いはエンジン２４の始動が要求されると、車両制御装置２０は、要求された動作を行なうようにドアロック装置２２又はエンジン２４を制御する。 Here, when the vehicle control device 20 receives a notification from the wireless controller 16 that the authentication of the mobile device 50 has been completed, the vehicle control device 20 operates the door lock device 22 (unlocks and unlocks the door) using the authenticated mobile device 50. Allow engine 24 to start. When the mobile device 50 is used to request operation of the door lock device 22 or start of the engine 24, the vehicle control device 20 controls the door lock device 22 or the engine 24 to perform the requested operation.

バッテリ２６は、車両１０の補機用バッテリであり、たとえば鉛蓄電池によって構成される。バッテリ２６は、ＮＦＣ通信機１２、ＢＬＥ通信機１４、無線コントローラ１６、及び車両制御装置２０へ作動電力を供給する。 The battery 26 is an auxiliary battery for the vehicle 10, and is configured by, for example, a lead-acid battery. The battery 26 supplies operating power to the NFC communication device 12, the BLE communication device 14, the wireless controller 16, and the vehicle control device 20.

携帯機器５０は、ＮＦＣ通信機５２と、ＢＬＥ通信機５４と、制御装置５６と、入力装置６２と、表示装置６４と、バッテリ６６とを含む。 Portable device 50 includes an NFC communication device 52, a BLE communication device 54, a control device 56, an input device 62, a display device 64, and a battery 66.

ＮＦＣ通信機５２は、ＮＦＣ規格に従う通信方式を用いて車両１０と無線通信を行なう通信機である。ＮＦＣ通信機５２は、図示しないアンテナを通じて、車両１０のＮＦＣ通信機１２との間でＮＦＣ通信を行なう。ＮＦＣ通信機５２は、ＮＦＣ通信機１２からの電波によって作動するパッシブタグ（ＩＣタグ）を含んで構成される。すなわち、ＮＦＣ通信機５２は、バッテリ６６から電力の供給を受けずに、ＮＦＣ通信機１２から受ける電波によって作動する。したがって、ＮＦＣ通信機５２は、携帯機器５０の電源がオフされた状態であっても、車両１０のＮＦＣ通信機１２と通信を行なうことができる。 The NFC communication device 52 is a communication device that performs wireless communication with the vehicle 10 using a communication method according to the NFC standard. The NFC communication device 52 performs NFC communication with the NFC communication device 12 of the vehicle 10 through an antenna (not shown). The NFC communication device 52 is configured to include a passive tag (IC tag) activated by radio waves from the NFC communication device 12. That is, the NFC communication device 52 operates by radio waves received from the NFC communication device 12 without receiving power from the battery 66. Therefore, the NFC communication device 52 can communicate with the NFC communication device 12 of the vehicle 10 even when the power of the mobile device 50 is turned off.

ＮＦＣ通信機５２は、ＮＦＣ通信機１２から発せられるリクエスト信号を受信すると、パッシブタグ（ＩＣタグ）に書き込まれている当該携帯機器５０に固有のＩＤ情報を含むレスポンス信号を生成し変調して車両１０のＮＦＣ通信機１２へ送信する。 When the NFC communication device 52 receives a request signal emitted from the NFC communication device 12, it generates a response signal containing ID information unique to the mobile device 50 written in a passive tag (IC tag), modulates it, and transmits it to the vehicle. 10 to the NFC communication device 12.

ＢＬＥ通信機５４は、ＢＬＥ通信規格に従う通信方式を用いて車両１０と無線通信を行なう通信機である。ＢＬＥ通信機５４は、バッテリ６６から電力の供給を受けて作動し、図示しないアンテナを通じて、車両１０のＢＬＥ通信機１４との間でＢＬＥ通信を行なう。 The BLE communication device 54 is a communication device that performs wireless communication with the vehicle 10 using a communication method that conforms to the BLE communication standard. The BLE communication device 54 operates upon receiving power from the battery 66, and performs BLE communication with the BLE communication device 14 of the vehicle 10 through an antenna (not shown).

ＢＬＥ通信機５４は、ＢＬＥ通信機１４から発せられるリクエスト信号を受信すると、当該携帯機器５０に固有のＩＤ情報を制御装置５６のメモリ６０から取得する。そして、ＢＬＥ通信機５４は、その取得されたＩＤ情報を含むレスポンス信号を生成し変調して車両１０のＢＬＥ通信機１４へ送信する。 Upon receiving the request signal issued from the BLE communication device 14, the BLE communication device 54 acquires ID information unique to the mobile device 50 from the memory 60 of the control device 56. Then, the BLE communication device 54 generates a response signal including the acquired ID information, modulates it, and transmits it to the BLE communication device 14 of the vehicle 10.

制御装置５６は、ＣＰＵ５８、メモリ６０、信号入出力ポート（図示せず）等を含んで構成される。制御装置５６は、携帯機器５０の各種制御を行なう。一例として、制御装置５６は、ＢＬＥ通信機５４からの要求に従って、メモリ６０に記憶されている当該携帯機器５０のＩＤ情報をメモリ６０から読み出してＢＬＥ通信機５４へ出力する。また、制御装置５６は、車両１０のドアロック装置２２の解錠／施錠又はエンジン２４の始動を要求する入力操作が入力装置６２において行なわれると、その入力操作に応じた信号をＢＬＥ通信機５４へ出力する。 The control device 56 includes a CPU 58, a memory 60, a signal input/output port (not shown), and the like. The control device 56 performs various controls on the mobile device 50. As an example, the control device 56 reads the ID information of the mobile device 50 stored in the memory 60 from the memory 60 and outputs it to the BLE communication device 54 in accordance with a request from the BLE communication device 54 . Further, when an input operation is performed on the input device 62 to request unlocking/locking of the door lock device 22 of the vehicle 10 or starting of the engine 24, the control device 56 transmits a signal corresponding to the input operation to the BLE communication device 54. Output to.

入力装置６２は、携帯機器５０に対する利用者の各種入力操作を受け付ける装置であり、たとえば、表示装置６４上のタッチ操作を検出するタッチセンサや、携帯機器５０に設けられる各種操作ボタンである。表示装置６４は、携帯機器５０の各種情報や、入力装置６２からの入力操作に応じた情報等を表示する。入力装置６２及び表示装置６４は、タッチパネルセンサによって一体的に構成してもよい。 The input device 62 is a device that receives various input operations from the user on the mobile device 50, and is, for example, a touch sensor that detects a touch operation on the display device 64, or various operation buttons provided on the mobile device 50. The display device 64 displays various information on the mobile device 50, information according to input operations from the input device 62, and the like. The input device 62 and the display device 64 may be integrally configured using a touch panel sensor.

バッテリ６６は、充放電可能な二次電池であり、たとえばリチウムイオン二次電池によって構成される。バッテリ６６は、図示しない充電装置を用いて外部の電源により充電することができる。そして、バッテリ６６は、ＢＬＥ通信機５４、制御装置５６、入力装置６２、及び表示装置６４へ作動電力を供給する。 The battery 66 is a rechargeable and dischargeable secondary battery, and includes, for example, a lithium ion secondary battery. The battery 66 can be charged by an external power source using a charging device (not shown). The battery 66 supplies operating power to the BLE communication device 54, the control device 56, the input device 62, and the display device 64.

なお、ＮＦＣ通信機５２は、上述のように、ＮＦＣ通信機１２からの電波によって作動するパッシブタグを含んで構成されるため、バッテリ６６から電力の供給を受けない。 Note that, as described above, the NFC communication device 52 is configured to include a passive tag activated by radio waves from the NFC communication device 12, and therefore does not receive power from the battery 66.

この無線通信システムでは、携帯機器５０を用いて、車両１０のドアロック装置２２の操作（乗降用ドアの施解錠）や、エンジン２４の始動を行なうことができる。ドアロック装置２２の操作について代表的に説明すると、ＢＬＥ通信機１４，５４間でＢＬＥ通信が確立し、ＢＬＥ通信を通じて携帯機器５０の認証が完了した状態で、入力装置６２においてドアロック装置２２の解錠又は施錠を要求する入力操作が行なわれると、その入力操作に応じた信号がＢＬＥ通信機５４からＢＬＥ通信機１４へ送信され、車両１０において当該信号に従って車両制御装置２０によりドアロック装置２２が制御される。 In this wireless communication system, the portable device 50 can be used to operate the door lock device 22 of the vehicle 10 (lock/unlock the boarding/exiting door) and start the engine 24. To explain the operation of the door lock device 22 in a typical manner, when BLE communication is established between the BLE communication devices 14 and 54 and the authentication of the mobile device 50 is completed through the BLE communication, the operation of the door lock device 22 is performed using the input device 62. When an input operation requesting unlocking or locking is performed, a signal corresponding to the input operation is transmitted from the BLE communication device 54 to the BLE communication device 14, and in the vehicle 10, the vehicle control device 20 activates the door lock device 22 according to the signal. is controlled.

また、ＮＦＣ通信機１２，５２間でＮＦＣ通信が確立し、ＮＦＣ通信を通じて携帯機器５０の認証が完了した状態で、ドアロック装置２２の解錠又は施錠を要求するための予め定められた操作が行なわれると、車両１０において当該操作に従って車両制御装置２０によりドアロック装置２２が制御される。たとえば、携帯機器５０を所定位置にかざしてＮＦＣ通信機１２，５２間の通信を所定時間以上継続させることで、当該操作に従ってドアロック装置２２の施解錠を切り替えるようにすることができる。 Further, in a state where NFC communication is established between the NFC communication devices 12 and 52 and authentication of the mobile device 50 is completed through the NFC communication, a predetermined operation for requesting unlocking or locking of the door lock device 22 is performed. When this operation is performed, the door lock device 22 is controlled by the vehicle control device 20 in the vehicle 10 according to the operation. For example, by holding the mobile device 50 over a predetermined position and allowing communication between the NFC communication devices 12 and 52 to continue for a predetermined time or longer, the door lock device 22 can be locked or unlocked in accordance with the operation.

上記の無線通信システムでは、ＮＦＣ通信機１２，５２間のＮＦＣ通信と、ＢＬＥ通信機１４，５４間のＢＬＥ通信とが可能である。ＮＦＣ通信とＢＬＥ通信とについては、ＢＬＥ通信の通信可能範囲の方が、ＮＦＣ通信の通信可能範囲よりも広い。一方、携帯機器５０の電源がオフされた状態では、バッテリ６６からＢＬＥ通信機５４へ作動電力が供給されないので、ＢＬＥ通信は不可であるけれども、バッテリ６６からの電力供給を必要としないパッシブタイプのＮＦＣ通信は可能である。 In the above wireless communication system, NFC communication between the NFC communication devices 12 and 52 and BLE communication between the BLE communication devices 14 and 54 are possible. Regarding NFC communication and BLE communication, the communicable range of BLE communication is wider than that of NFC communication. On the other hand, when the mobile device 50 is powered off, operating power is not supplied from the battery 66 to the BLE communication device 54, so BLE communication is not possible. NFC communication is possible.

そのため、車両１０と携帯機器５０との通信には、基本的には、通信可能範囲の広いＢＬＥ通信機１４，５４間のＢＬＥ通信が用いられ、ＮＦＣ通信機１２，５２間のＮＦＣ通信は、バッテリ切れ等により携帯機器５０の電源がオフされているためにＢＬＥ通信が不可である場合のバックアップとして用いられる。 Therefore, for communication between the vehicle 10 and the mobile device 50, BLE communication between the BLE communication devices 14 and 54, which has a wide communication range, is basically used, and the NFC communication between the NFC communication devices 12 and 52 is It is used as a backup when BLE communication is not possible because the power of the mobile device 50 is turned off due to a dead battery or the like.

ＮＦＣ通信でもＢＬＥ通信でも、携帯機器５０を所持する利用者が車両１０に近づいたことを検知するために、車両１０のＮＦＣ通信機１２及びＢＬＥ通信機１４において、携帯機器５０を検知するためのポーリングが行なわれる。ポーリング中は、車両１０に接近した携帯機器５０を検知するために、周囲に対して一定期間毎に電波（リクエスト信号）が出力されるため、暗電流が流れる。このポーリングに伴なう暗電流が大きいと、バッテリ２６が意図せず枯渇する等の問題が生じる可能性がある。 In both NFC communication and BLE communication, in order to detect when a user possessing a mobile device 50 approaches the vehicle 10, the NFC communication device 12 and the BLE communication device 14 of the vehicle 10 are configured to detect the mobile device 50. Polling is performed. During polling, dark current flows because radio waves (request signals) are output to the surroundings at regular intervals in order to detect the mobile device 50 approaching the vehicle 10. If the dark current accompanying this polling is large, problems such as unintentional depletion of the battery 26 may occur.

そこで、本実施の形態に従う無線通信システムでは、ＢＬＥ通信機１４，５４間、及びＮＦＣ通信機１２，５２間の一方において、通信が確立し、携帯機器５０の認証が完了した場合には、他方の通信は不要になるため、無線コントローラ１６は、その他方の通信に用いられる通信機によるポーリングを停止する。これにより、ＢＬＥ通信及びＮＦＣ通信の一方において認証が完了した後は、他方の通信に用いられる通信機においてポーリングに伴なう暗電流を低減することができる。 Therefore, in the wireless communication system according to the present embodiment, when communication is established between one of the BLE communication devices 14 and 54 and between the NFC communication devices 12 and 52 and authentication of the mobile device 50 is completed, the other Since the communication of the other is no longer necessary, the wireless controller 16 stops polling by the communication device used for the communication of the other. Thereby, after authentication is completed in one of the BLE communication and the NFC communication, dark current accompanying polling can be reduced in the communication device used for the other communication.

なお、ＢＬＥ通信で認証が行なわれた場合に許可される機能と、ＮＦＣ通信で認証が行なわれた場合に許可される機能とは、必ずしも全て一致している必要はないが、少なくとも一部の機能は重複している。たとえば、乗降用ドアの解施錠機能は、ＢＬＥ通信で認証が行なわれた場合、及びＮＦＣ通信で認証が行なわれた場合の双方において許可される機能とされる。これにより、不要とされた通信のポーリングを停止することにより乗降用ドアの解施錠ができなくなる事態が回避される。 Note that the functions that are permitted when authentication is performed using BLE communication and the functions that are permitted when authentication is performed using NFC communication do not necessarily all match, but at least some of the functions are not necessarily the same. Functionality is redundant. For example, the unlocking function of the passenger door is a function that is permitted both when authentication is performed using BLE communication and when authentication is performed using NFC communication. This avoids a situation where the passenger door cannot be unlocked due to stopping polling of unnecessary communications.

なお、停止したポーリングは、所定のポーリング条件が成立した場合に再開される。ポーリング条件は、たとえば、作動していたエンジン２４が停止し、イグニッションキー等がオフ操作されてＲｅａｄｙ－Ｏｆｆ状態となり、搭乗者が降車してドアが施錠された場合等に成立するものとすることができる。 Note that polling that has been stopped is restarted when a predetermined polling condition is met. The polling condition shall be satisfied, for example, when the engine 24 that was operating is stopped, the ignition key etc. is turned off to enter the Ready-Off state, the passenger exits the vehicle and the door is locked, etc. I can do it.

図２は、車両１０のＢＬＥ通信機１４及びＮＦＣ通信機１２によるポーリングの一例を示すタイミングチャートである。図２を参照して、時刻ｔ１以前にポーリング条件が成立しており、時刻ｔ１～ｔ２の間、ＢＬＥ通信機１４及びＮＦＣ通信機１２の各々から周囲に向けてリクエスト信号が発信されている。 FIG. 2 is a timing chart showing an example of polling by the BLE communication device 14 and the NFC communication device 12 of the vehicle 10. Referring to FIG. 2, a polling condition is established before time t1, and a request signal is transmitted from each of BLE communication device 14 and NFC communication device 12 to the surroundings from time t1 to t2.

なお、このようなリクエスト信号は、時刻ｔ１以前においても、ポーリング条件の成立後は一定期間毎に発信されている。なお、この例では、ＢＬＥ通信機１４によるポーリング（以下「ＢＬＥポーリング」と称する場合がある。）と、ＮＦＣ通信機１２によるポーリング（以下「ＮＦＣポーリング」と称する場合がある。）とは同期しているが、ＢＬＥポーリングとＮＦＣポーリングとは、必ずしも同期している必要はなく、リクエスト信号の長さも必ずしも同じである必要はない。 Note that such a request signal is transmitted at regular intervals even before time t1 after the polling condition is established. Note that in this example, polling by the BLE communication device 14 (hereinafter sometimes referred to as "BLE polling") and polling by the NFC communication device 12 (hereinafter sometimes referred to as "NFC polling") are synchronized. However, BLE polling and NFC polling do not necessarily need to be synchronized, and the length of the request signal does not necessarily need to be the same.

時刻ｔ４において、通信可能範囲の広いＢＬＥ通信において、リクエスト信号に応答して携帯機器５０のＢＬＥ通信機５４から送信されたレスポンス信号がＢＬＥ通信機１４により受信され、当該レスポンス信号に含まれるＩＤ情報の照合が行なわれる（「認証中」）。そして、時刻ｔ５において、携帯機器５０の認証が完了すると、無線コントローラ１６は、ＮＦＣ停止指令をＮＦＣ通信機１２へ出力することによりＮＦＣポーリングを停止する。これにより、ＢＬＥ通信において認証が完了した後は、ポーリングに伴なう暗電流を低減することができる。 At time t4, in BLE communication with a wide communication range, a response signal transmitted from the BLE communication device 54 of the mobile device 50 in response to the request signal is received by the BLE communication device 14, and the ID information included in the response signal is received by the BLE communication device 14. verification is performed (“authenticating”). Then, at time t5, when the authentication of the mobile device 50 is completed, the wireless controller 16 stops NFC polling by outputting an NFC stop command to the NFC communication device 12. Thereby, after authentication is completed in BLE communication, dark current associated with polling can be reduced.

図３は、車両１０のＢＬＥ通信機１４及びＮＦＣ通信機１２によるポーリングの他の例を示すタイミングチャートである。この図３では、携帯機器５０の電源がオフされている場合（バッテリ切れ等）の例が示される。 FIG. 3 is a timing chart showing another example of polling by the BLE communication device 14 and the NFC communication device 12 of the vehicle 10. In FIG. 3, an example is shown in which the power of the mobile device 50 is turned off (e.g., the battery is exhausted).

図３を参照して、この例でも、時刻ｔ１１以前にポーリング条件が成立しており、時刻ｔ１１～ｔ１２の間、ＢＬＥ通信機１４及びＮＦＣ通信機１２の各々から周囲に向けてリクエスト信号が発信されている。また、リクエスト信号は、時刻ｔ１１以前においても、ポーリング条件の成立後は一定期間毎に発信されている。 Referring to FIG. 3, in this example as well, the polling condition is satisfied before time t11, and between times t11 and t12, request signals are transmitted from each of the BLE communication device 14 and the NFC communication device 12 to the surroundings. has been done. Furthermore, the request signal is transmitted at regular intervals even before time t11 after the polling condition is satisfied.

この例では、携帯機器５０の電源がオフされているので、ＢＬＥ通信機５４が停止しており、ＢＬＥポーリングに対してＢＬＥ通信機５４からレスポンス信号が送信されない。そして、利用者が車両１０にさらに近づき、時刻ｔ１４において、ＮＦＣ通信機１２からのリクエスト信号に応答して携帯機器５０のＮＦＣ通信機５２から送信されたレスポンス信号がＮＦＣ通信機１２により受信され、当該レスポンス信号に含まれるＩＤ情報の照合が行なわれる（「認証中」）。ＮＦＣ通信機５２は、バッテリ６６からの給電を必要としないパッシブタイプの通信機であるので、携帯機器５０の電源がオフであっても、車両１０のＮＦＣ通信機１２からのリクエスト信号に応答してＮＦＣ通信機１２へレスポンス信号を送信することができる。 In this example, since the mobile device 50 is powered off, the BLE communication device 54 is stopped, and no response signal is transmitted from the BLE communication device 54 in response to BLE polling. Then, as the user approaches the vehicle 10 further, at time t14, a response signal transmitted from the NFC communication device 52 of the mobile device 50 in response to the request signal from the NFC communication device 12 is received by the NFC communication device 12, The ID information included in the response signal is verified (“authenticating”). Since the NFC communication device 52 is a passive type communication device that does not require power supply from the battery 66, it can respond to a request signal from the NFC communication device 12 of the vehicle 10 even if the power of the mobile device 50 is off. A response signal can be transmitted to the NFC communication device 12 using the NFC communication device 12.

そして、時刻ｔ１５において、携帯機器５０の認証が完了すると、無線コントローラ１６は、ＢＬＥ停止指令をＢＬＥ通信機１４へ出力することによりＢＬＥポーリングを停止する。これにより、ＮＦＣ通信において認証が完了した後は、ポーリングによる暗電流を低減することができる。 Then, at time t15, when the authentication of the mobile device 50 is completed, the wireless controller 16 stops BLE polling by outputting a BLE stop command to the BLE communication device 14. Thereby, after authentication is completed in NFC communication, dark current due to polling can be reduced.

図４は、車両１０の無線コントローラ１６により実行される処理の手順の一例を示すフローチャートである。このフローチャートに示される一連の処理は、所定の周期毎に繰り返し実行される。 FIG. 4 is a flowchart illustrating an example of a procedure of processing executed by the wireless controller 16 of the vehicle 10. The series of processes shown in this flowchart are repeatedly executed at predetermined intervals.

図４を参照して、無線コントローラ１６は、ＢＬＥ通信機１４及びＮＦＣ通信機１２がポーリングを実行するためのポーリング条件が成立しているか否かを判定する（ステップＳ１０）。ポーリング条件は、たとえば、作動していたエンジン２４が停止し、車両１０の状態がＲｅａｄｙ－Ｏｆｆ状態となり、搭乗者の降車後にドアが施錠された場合等に成立するものとすることができる。ポーリング条件が成立していないときは（ステップＳ１０においてＮＯ）、リターンへ処理が移行される。 Referring to FIG. 4, the wireless controller 16 determines whether polling conditions for the BLE communication device 14 and the NFC communication device 12 to perform polling are satisfied (step S10). The polling condition may be established, for example, when the operating engine 24 is stopped, the vehicle 10 is in a Ready-Off state, and the doors are locked after the passenger gets off the vehicle. If the polling condition is not satisfied (NO in step S10), the process moves to return.

ステップＳ１０においてポーリング条件が成立しているものと判定されると（ステップＳ１０においてＹＥＳ）、無線コントローラ１６は、ＢＬＥ通信機１４及びＮＦＣ通信機１２の双方へポーリングの実行を指示する指令を出力する（ステップＳ２０）。これにより、ＢＬＥ通信機１４及びＮＦＣ通信機１２の各々は、周囲に対して一定期間毎にリクエスト信号を発信する。 If it is determined in step S10 that the polling condition is met (YES in step S10), the wireless controller 16 outputs a command to both the BLE communication device 14 and the NFC communication device 12 to execute polling. (Step S20). As a result, each of the BLE communication device 14 and the NFC communication device 12 transmits a request signal to the surroundings at regular intervals.

次いで、無線コントローラ１６は、ＢＬＥ通信機１４，５４間で通信が確立し、ＢＬＥ通信を通じて携帯機器５０の認証が完了したか否かを判定する（ステップＳ３０）。具体的には、ＢＬＥ通信機１４からのリクエスト信号に応答して携帯機器５０のＢＬＥ通信機５４から送信されたレスポンス信号がＢＬＥ通信機１４により受信され、当該レスポンス信号に含まれるＩＤ情報の照合結果に基づいて、携帯機器５０の認証が完了したか否かが判定される。 Next, the wireless controller 16 determines whether communication has been established between the BLE communication devices 14 and 54 and authentication of the mobile device 50 has been completed through BLE communication (step S30). Specifically, a response signal transmitted from the BLE communication device 54 of the mobile device 50 in response to a request signal from the BLE communication device 14 is received by the BLE communication device 14, and ID information included in the response signal is verified. Based on the result, it is determined whether the authentication of the mobile device 50 is completed.

そして、ステップＳ３０において、ＢＬＥ通信を通じて携帯機器５０の認証が完了したものと判定されると（ステップＳ３０においてＹＥＳ）、無線コントローラ１６は、ＮＦＣ通信機１２によるポーリング（ＮＦＣポーリング）を停止する（ステップＳ４０）。 Then, in step S30, when it is determined that the authentication of the mobile device 50 is completed through BLE communication (YES in step S30), the wireless controller 16 stops polling (NFC polling) by the NFC communication device 12 (step S40).

一方、ステップＳ３０において、ＢＬＥ通信機１４，５４間で通信が確立せず、携帯機器５０の認証が完了していないと判定されると（ステップＳ３０においてＮＯ）、無線コントローラ１６は、ＮＦＣ通信機１２，５２間で通信が確立し、ＮＦＣ通信を通じて携帯機器５０の認証が完了したか否かを判定する（ステップＳ５０）。具体的には、ＮＦＣ通信機１２からのリクエスト信号に応答して携帯機器５０のＮＦＣ通信機５２から送信されたレスポンス信号がＮＦＣ通信機１２により受信され、当該レスポンス信号に含まれるＩＤ情報の照合結果に基づいて、携帯機器５０の認証が完了したか否かが判定される。 On the other hand, if it is determined in step S30 that communication is not established between the BLE communication devices 14 and 54 and authentication of the mobile device 50 is not completed (NO in step S30), the wireless controller 16 transmits the NFC communication device 12 and 52, and it is determined whether or not the authentication of the mobile device 50 is completed through NFC communication (step S50). Specifically, a response signal transmitted from the NFC communication device 52 of the mobile device 50 in response to a request signal from the NFC communication device 12 is received by the NFC communication device 12, and ID information included in the response signal is verified. Based on the result, it is determined whether the authentication of the mobile device 50 is completed.

そして、ステップＳ５０において、ＮＦＣ通信を通じて携帯機器５０の認証が完了したものと判定されると（ステップＳ５０においてＹＥＳ）、無線コントローラ１６は、ＢＬＥ通信機１４によるポーリング（ＢＬＥポーリング）を停止する（ステップＳ６０）。 Then, in step S50, when it is determined that the authentication of the mobile device 50 is completed through NFC communication (YES in step S50), the wireless controller 16 stops polling (BLE polling) by the BLE communication device 14 (step S60).

なお、ＢＬＥ通信で認証が完了せず（ステップＳ３０においてＮＯ）、ＮＦＣ通信で認証が完了する場合とは（ステップＳ５０においてＹＥＳ）、図３で説明したように、携帯機器５０の電源がオフされているためにＢＬＥ通信が不可である場合のバックアップとしてＮＦＣ通信が用いられる場合に相当する。 Note that the case where the authentication is not completed by BLE communication (NO in step S30) and the authentication is completed by NFC communication (YES in step S50) means that the power of the mobile device 50 is turned off as explained in FIG. 3. This corresponds to a case where NFC communication is used as a backup when BLE communication is not possible due to

なお、ステップＳ５０において、ＮＦＣ通信機１２，５２間で通信が確立せず、携帯機器５０の認証が完了していないと判定されると（ステップＳ５０においてＮＯ）、リターンへ処理が移行される。 Note that if it is determined in step S50 that communication is not established between the NFC communication devices 12 and 52 and authentication of the mobile device 50 is not completed (NO in step S50), the process moves to return.

なお、上記では、ステップＳ３０においてＢＬＥ通信についての接続及び認証が完了したか否かが判定され、ステップＳ３０においてＮＯと判定された場合に、ステップＳ５０においてＮＦＣ通信についての接続及び認証が完了したか否かが判定されるものとしたが、これらの処理は、逆順であってもよいし、並列であってもよい。 Note that in the above, it is determined in step S30 whether or not the connection and authentication for BLE communication have been completed, and if the determination is NO in step S30, it is determined in step S50 whether or not the connection and authentication for NFC communication has been completed. However, these processes may be performed in reverse order or in parallel.

すなわち、特に図示しないが、ステップＳ２０の処理の実行後、無線コントローラ１６は、ＮＦＣ通信の接続及び認証が完了したか否かを判定し、ＮＦＣ通信の接続及び認証が完了していないと判定された場合に、ＢＬＥ通信の接続及び認証が完了したか否かを判定するようにしてもよい。そして、ＮＦＣ通信の接続及び認証が完了したものと判定された場合にＢＬＥポーリングを停止し、また、ＢＬＥ通信の接続及び認証が完了したものと判定された場合にＮＦＣポーリングを停止するようにしてもよい。 That is, although not particularly illustrated, after executing the process of step S20, the wireless controller 16 determines whether or not the connection and authentication of NFC communication are completed, and it is determined that the connection and authentication of NFC communication are not completed. In this case, it may be determined whether the connection and authentication of BLE communication are completed. Then, the BLE polling is stopped when it is determined that the NFC communication connection and authentication are completed, and the NFC polling is stopped when it is determined that the BLE communication connection and authentication are completed. Good too.

また、ステップＳ２０の処理の実行後、無線コントローラ１６は、ステップＳ３０の処理とステップＳ５０の処理とを、並列に実行してもよいし、さらには同時に実行してもよい。そして、ステップＳ３０においてＹＥＳと判定された場合に、ステップＳ４０においてＮＦＣポーリングを停止し、ステップＳ５０においてＹＥＳと判定された場合に、ステップＳ６０においてＢＬＥポーリングを停止するようにしてもよい。 Furthermore, after executing the process in step S20, the wireless controller 16 may execute the process in step S30 and the process in step S50 in parallel or even simultaneously. Then, if the determination is YES in step S30, the NFC polling may be stopped in step S40, and if the determination is YES in step S50, the BLE polling may be stopped in step S60.

以上のように、本実施の形態においては、ＢＬＥ通信機１４，５４間の通信が確立し、ＢＬＥ通信において携帯機器５０の認証が完了した場合には、バックアップ用のＮＦＣ通信は不要になるため、ＮＦＣ通信機１２によるポーリングを停止させる。一方、携帯機器５０の電源がオフされていたために、ＢＬＥ通信機１４，５４間の通信が確立せず、バックアップ用のＮＦＣ通信において携帯機器５０の認証が完了した場合には、ＢＬＥ通信機１４のポーリングを停止させる。したがって、本実施の形態によれば、ポーリングによる暗電流を低減することができる。 As described above, in this embodiment, when communication between BLE communication devices 14 and 54 is established and authentication of mobile device 50 is completed in BLE communication, backup NFC communication is no longer necessary. , stops polling by the NFC communication device 12. On the other hand, if communication between the BLE communication devices 14 and 54 is not established because the power of the mobile device 50 is turned off, and authentication of the mobile device 50 is completed in backup NFC communication, the BLE communication device 14 Stop polling. Therefore, according to this embodiment, dark current due to polling can be reduced.

なお、上記の実施の形態では、車両１０は、エンジン２４を搭載する車両としたが、本開示の射程範囲は、エンジンを搭載した車両に限定されず、エンジンを搭載しない電気自動車や燃料電池車等も含む。 In the above embodiment, the vehicle 10 is a vehicle equipped with the engine 24, but the range of the present disclosure is not limited to vehicles equipped with an engine, but includes electric vehicles and fuel cell vehicles not equipped with an engine. Also included.

また、上記の実施の形態では、ＮＦＣ通信機５２は、携帯機器５０に搭載されるものとしたが、ＮＦＣ通信機５２は、携帯機器５０とは別の、電源を持たないカード等に搭載されてもよい。また、上記では、ＮＦＣ通信機５２は、ＮＦＣ通信機１２からの電波によって作動するパッシブタグ（ＩＣタグ）を含んで構成されるものとしたが、ＮＦＣ通信機５２は、パッシブタイプのものに限定されず、バッテリ６６から電力を受けて作動するものであってもよい。 Further, in the above embodiment, the NFC communication device 52 is installed in the mobile device 50, but the NFC communication device 52 is installed in a card or the like that does not have a power source and is separate from the mobile device 50. It's okay. Furthermore, in the above description, the NFC communication device 52 is configured to include a passive tag (IC tag) activated by radio waves from the NFC communication device 12, but the NFC communication device 52 is limited to a passive type. Instead, it may be operated by receiving power from the battery 66.

また、上記の実施の形態では、車両１０において、無線コントローラ１６は、車両制御装置２０とは別に設けられるものとしたが、無線コントローラ１６の機能を車両制御装置２０が備えてもよい。 Further, in the above embodiment, the wireless controller 16 is provided separately from the vehicle control device 20 in the vehicle 10, but the vehicle control device 20 may have the functions of the wireless controller 16.

また、上記の実施の形態において、ＢＬＥ通信機１４，５４に代えて、超広帯域無線（ＵＷＢ（Ultra Wide Band））通信の規格に従う通信方式を用いて無線通信を行なうＵＷＢ通信機を車両１０及び携帯機器５０の双方に備えてもよい。また、ＢＬＥ通信機１４，５４に加えて、車両１０及び携帯機器５０の双方にＵＷＢ通信機を備えてもよい。 In the above embodiment, instead of the BLE communication devices 14 and 54, the vehicle 10 and Both portable devices 50 may be provided with the same. Further, in addition to the BLE communication devices 14 and 54, both the vehicle 10 and the mobile device 50 may be provided with a UWB communication device.

また、上記の実施の形態では、ＮＦＣ通信機１２、ＢＬＥ通信機１４、及び無線コントローラ１６は、車両１０に搭載されるものとしたが、本開示の射程範囲は、車両に搭載される無線通信装置に限定されるものではない。たとえば、ＮＦＣ通信機１２、ＢＬＥ通信機１４、及び無線コントローラ１６が住宅や宅配ＢＯＸに設けられ、住宅や宅配ＢＯＸのドアの解施錠を行なうキーとして携帯機器５０が用いられてもよい。 Further, in the above embodiment, the NFC communication device 12, the BLE communication device 14, and the wireless controller 16 are mounted on the vehicle 10, but the range of the present disclosure is limited to the wireless communication device mounted on the vehicle. It is not limited to devices. For example, the NFC communication device 12, the BLE communication device 14, and the wireless controller 16 may be provided in a home or a delivery box, and the mobile device 50 may be used as a key to unlock the door of the home or delivery box.

今回開示された実施の形態は、全ての点で例示であって制限的なものではないと考えられるべきである。本開示により示される技術的範囲は、上記した実施の形態の説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。 The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The technical scope indicated by the present disclosure is indicated by the claims rather than the description of the embodiments described above, and is intended to include meanings equivalent to the claims and all changes within the scope. be done.

以上に説明した例示的な形態は、以下の態様の具体例である。
一態様における無線通信装置は、互いに異なる通信方式を用いて無線通信を行なう複数の通信機と、複数の通信機を制御するコントローラとを備える。各通信機は、無線通信可能な携帯機器を検知するためのポーリングと、ポーリングにより検知された携帯機器の認証とを行なうように構成される。コントローラは、複数の通信機のうちのいずれかにおいて認証が完了した場合に、残余の通信機によるポーリングを停止する。 The exemplary forms described above are specific examples of the following aspects.
A wireless communication device in one aspect includes a plurality of communication devices that perform wireless communication using mutually different communication methods, and a controller that controls the plurality of communication devices. Each communication device is configured to perform polling to detect a mobile device capable of wireless communication and to authenticate the mobile device detected by polling. When authentication is completed in any one of the plurality of communication devices, the controller stops polling by the remaining communication devices.

また、一態様における無線通信システムは、無線通信装置と、無線通信装置と無線通信を行なう携帯機器とを備える。無線通信装置は、互いに異なる通信方式を用いて無線通信を行なう複数の通信機と、複数の通信機を制御するコントローラとを含む。各通信機は、携帯機器を検知するためのポーリングと、ポーリングにより検知された携帯機器の認証とを行なうように構成される。コントローラは、複数の通信機のうちのいずれかにおいて認証が完了した場合に、残余の通信機によるポーリングを停止する。 Further, a wireless communication system in one embodiment includes a wireless communication device and a mobile device that performs wireless communication with the wireless communication device. A wireless communication device includes a plurality of communication devices that perform wireless communication using different communication methods, and a controller that controls the plurality of communication devices. Each communication device is configured to perform polling to detect a mobile device and authenticate the mobile device detected by polling. When authentication is completed in any one of the plurality of communication devices, the controller stops polling by the remaining communication devices.

上記の無線通信装置及び無線通信システムでは、複数の通信機のうちのいずれかにおいて携帯機器の認証が完了した場合には、残余の通信機と当該携帯機器との通信は不要になるため、残余の通信機によるポーリングを停止させる。これにより、ポーリングに伴なう暗電流を低減することができる。 In the above-mentioned wireless communication device and wireless communication system, if the authentication of a mobile device is completed in one of the plurality of communication devices, communication between the remaining communication devices and the mobile device is no longer necessary, so the remaining Stop polling by the communication device. Thereby, dark current associated with polling can be reduced.

複数の通信機は、ＮＦＣ規格に従う通信方式を用いるＮＦＣ通信機と、ＮＦＣ規格と異なる無線通信規格に従う通信方式を用いる少なくとも１つの通信機とを含むものであってもよい。そして、コントローラは、少なくとも１つの通信機のいずれかにおいて認証が完了した場合に、ＮＦＣ通信機によるポーリングを停止してもよい。 The plurality of communication devices may include an NFC communication device that uses a communication method that follows the NFC standard, and at least one communication device that uses a communication method that follows a wireless communication standard that is different from the NFC standard. Then, the controller may stop polling by the NFC communication device when authentication is completed in any one of the at least one communication device.

また、少なくとも１つの通信機は、ＢＬＥ通信規格に従う通信方式を用いるＢＬＥ通信機と、ＵＷＢ通信規格に従う通信方式を用いるＵＷＢ通信機との少なくとも一方を含んでもよい。 Further, the at least one communication device may include at least one of a BLE communication device using a communication method according to the BLE communication standard and a UWB communication device using a communication method according to the UWB communication standard.

ＮＦＣ規格に従う通信方式の通信可能範囲は、ＢＬＥ通信規格或いはＵＷＢ通信規格に従う通信方式の通信可能範囲よりも狭いけれども、ＮＦＣ規格に従う通信方式は、電源が不要なパッシブタイプであるため、上記の態様では、ＮＦＣ通信機は、ＢＬＥ通信機又はＵＷＢ通信機のバックアップとして用いられる。そして、上記の態様によれば、ＢＬＥ通信機又はＵＷＢ通信機において認証が完了した場合に、バックアップ用のＮＦＣ通信機によるポーリングを停止するので、ポーリングによる暗電流を低減することができる。 Although the communication range of the communication method according to the NFC standard is narrower than that of the communication method according to the BLE communication standard or the UWB communication standard, the communication method according to the NFC standard is a passive type that does not require a power supply, so the above aspect In this case, the NFC communication device is used as a backup for the BLE communication device or the UWB communication device. According to the above aspect, polling by the backup NFC communication device is stopped when authentication is completed in the BLE communication device or the UWB communication device, so dark current due to polling can be reduced.

なお、各通信機において認証により許可される機能の少なくとも一部は、残余の通信機において認証により許可される機能の少なくとも一部と重複していればよい。 Note that at least some of the functions permitted by authentication in each communication device may overlap with at least some of the functions permitted by authentication in the remaining communication devices.

これにより、ポーリングが停止される通信機において認証により許可される機能が全て実施不可となる事態が回避される。 This avoids a situation where all functions permitted by authentication cannot be performed in a communication device whose polling is stopped.

無線通信装置は、車両に搭載され、各通信機において認証により許可される機能は、携帯機器を用いた車両のドアの解錠及び施錠を含んでもよい。 The wireless communication device is installed in a vehicle, and the functions permitted by authentication in each communication device may include unlocking and locking the vehicle door using a mobile device.

これにより、ある通信機によるポーリングが停止され、その通信機を用いた通信が行なわれなくなっても、通信及び認証に用いられた他の通信機を通じて、携帯機器を用いて車両のドアの解錠及び施錠を行なうことができる。 As a result, even if polling by a certain communication device is stopped and communication using that communication device is no longer performed, the door of the vehicle can be unlocked using the mobile device through the other communication device used for communication and authentication. and can be locked.

１０ 車両、１２，５２ ＮＦＣ通信機、１４，５４ ＢＬＥ通信機、１６ 無線コントローラ、１８，６０ メモリ、２０ 車両制御装置、２２ ドアロック装置、２４ エンジン、２６，６６ バッテリ、５０ 携帯機器、５６ 制御装置、５８ ＣＰＵ、６２ 入力装置、６４ 表示装置。 10 vehicle, 12,52 NFC communication device, 14,54 BLE communication device, 16 wireless controller, 18,60 memory, 20 vehicle control device, 22 door lock device, 24 engine, 26,66 battery, 50 mobile device, 56 control device, 58 CPU, 62 input device, 64 display device.

Claims (5)

互いに異なる通信方式を用いて無線通信を行なう複数の通信機と、
前記複数の通信機を制御するコントローラとを備え、
前記複数の通信機の各々は、無線通信可能な携帯機器を検知するためのポーリングと、前記ポーリングにより検知された携帯機器の認証とを行なうように構成され、
前記コントローラは、前記複数の通信機のうちのいずれかにおいて認証が完了した場合に、残余の通信機によるポーリングを停止し、
前記複数の通信機は、
近距離無線通信規格に従う通信方式を用いるＮＦＣ通信機と、
前記近距離無線通信規格と異なる無線通信規格に従う通信方式を用いる少なくとも１つの通信機とを含み、
前記コントローラは、前記少なくとも１つの通信機のいずれかにおいて認証が完了した場合に、前記ＮＦＣ通信機によるポーリングを停止し、
前記少なくとも１つの通信機は、ＢＬＥ通信規格に従う通信方式を用いるＢＬＥ通信機と、ＵＷＢ通信規格に従う通信方式を用いるＵＷＢ通信機との少なくとも一方を含み、
前記複数の通信機の各々において認証により許可される機能の少なくとも一部は、前記残余の通信機において認証により許可される機能の少なくとも一部と重複している、無線通信装置。 A plurality of communication devices that perform wireless communication using mutually different communication methods,
and a controller that controls the plurality of communication devices,
Each of the plurality of communication devices is configured to perform polling to detect a mobile device capable of wireless communication and authenticate the mobile device detected by the polling,
The controller stops polling by the remaining communication devices when authentication is completed in any of the plurality of communication devices,
The plurality of communication devices are
an NFC communication device that uses a communication method that complies with short-range wireless communication standards;
at least one communication device that uses a communication method according to a wireless communication standard different from the short-range wireless communication standard,
The controller stops polling by the NFC communication device when authentication is completed in any of the at least one communication device,
The at least one communication device includes at least one of a BLE communication device using a communication method according to the BLE communication standard and a UWB communication device using a communication method according to the UWB communication standard,
At least part of the functions permitted by authentication in each of the plurality of communication devices overlaps at least part of the functions permitted by authentication in the remaining communication devices. 前記無線通信装置は、車両に搭載され、
前記複数の通信機の各々において認証により許可される機能は、前記携帯機器を用いた前記車両のドアの解錠及び施錠を含む、請求項１に記載の無線通信装置。 The wireless communication device is mounted on a vehicle,
The wireless communication device according to claim 1 , wherein the functions permitted by authentication in each of the plurality of communication devices include unlocking and locking a door of the vehicle using the mobile device. 請求項１又は請求項２に記載の無線通信装置を備える車両。 A vehicle comprising the wireless communication device according to claim 1 or claim 2 . 無線通信装置と、
前記無線通信装置と無線通信を行なう携帯機器とを備え、
前記無線通信装置は、
互いに異なる通信方式を用いて無線通信を行なう複数の通信機と、
前記複数の通信機を制御するコントローラとを含み、
前記複数の通信機の各々は、前記携帯機器を検知するためのポーリングと、前記ポーリングにより検知された携帯機器の認証とを行なうように構成され、
前記コントローラは、前記複数の通信機のうちのいずれかにおいて認証が完了した場合に、残余の通信機によるポーリングを停止し、
前記複数の通信機は、
近距離無線通信規格に従う通信方式を用いるＮＦＣ通信機と、
前記近距離無線通信規格と異なる無線通信規格に従う通信方式を用いる少なくとも１つの通信機とを含み、
前記コントローラは、前記少なくとも１つの通信機のいずれかにおいて認証が完了した場合に、前記ＮＦＣ通信機によるポーリングを停止し、
前記少なくとも１つの通信機は、ＢＬＥ通信規格に従う通信方式を用いるＢＬＥ通信機と、ＵＷＢ通信規格に従う通信方式を用いるＵＷＢ通信機との少なくとも一方を含み、
前記複数の通信機の各々において認証により許可される機能の少なくとも一部は、前記残余の通信機において認証により許可される機能の少なくとも一部と重複している、無線通信システム。 a wireless communication device;
comprising the wireless communication device and a mobile device that performs wireless communication,
The wireless communication device includes:
A plurality of communication devices that perform wireless communication using mutually different communication methods,
a controller that controls the plurality of communication devices,
Each of the plurality of communication devices is configured to perform polling to detect the mobile device and authenticate the mobile device detected by the polling,
The controller stops polling by the remaining communication devices when authentication is completed in any of the plurality of communication devices,
The plurality of communication devices are
an NFC communication device that uses a communication method that complies with short-range wireless communication standards;
at least one communication device that uses a communication method according to a wireless communication standard different from the short-range wireless communication standard,
The controller stops polling by the NFC communication device when authentication is completed in any of the at least one communication device,
The at least one communication device includes at least one of a BLE communication device using a communication method according to the BLE communication standard and a UWB communication device using a communication method according to the UWB communication standard,
At least part of the functions permitted by authentication in each of the plurality of communication devices overlaps at least part of the functions permitted by authentication in the remaining communication devices. 前記無線通信装置は、車両に搭載され、
前記複数の通信機の各々において認証により許可される機能は、前記携帯機器を用いた前記車両のドアの解錠及び施錠を含む、請求項４に記載の無線通信システム。 The wireless communication device is mounted on a vehicle,
5. The wireless communication system according to claim 4 , wherein the functions permitted by authentication in each of the plurality of communication devices include unlocking and locking a door of the vehicle using the mobile device.
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